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Comparison of Shadows.
Similar triangles.
5:8
x:72
x = 5 x 72 / 8 = 45 ft.
Dirty water in bowl.
Ht. of Tree.
This is a scan of a page from the Gilwell Note Book for Woodbadge Training for Roger H. Tingle, 37th Wolverhampton Sea Scouts from the 1960s.
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